Pen



FIG. 1 is an upper front left perspective view of a pen showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof, with the left side elevation view being a mirror image of the right side elevation view;

FIG. 5 is an enlarged top plan view thereof;

FIG. 6 is an enlarged bottom plan view thereof;

FIG. 7 is an upper front left perspective view of the pen cap shown separate of the pen in FIG. 1 for convenience of illustration;

FIG. 8 is a front elevation view thereof;

FIG. 9 is a rear elevation view thereof;

FIG. 10 is a right side elevation view thereof, with the left side elevation view being a mirror image of the right side elevation view;

FIG. 11 is an enlarged top plan view thereof; and,

FIG. 12 is an enlarged bottom plan view thereof.

The broken lines that define the bounds of the claimed design in FIG. 12 form no part thereof. 

CLAIM The ornamental design for a pen, as shown and described. 